LAN will not work on system start

Hi and thanks in advance.
I'm runnning 2 pcs and laptop (all xp) with wireless access point connected
to one of the pcs. After power interruption and Nortons 2005 install network
wouldnt talk.
After some fiddling managed to get it up and talking HOWEVER now after I
switch the wap pc on in the morning the WLAN does not function. I have to run
the office network setup wizard and this fixes problem. So I guess some
service is not starting on when I boot up. Please help
Cheers
Nad